IP Library › Granted Patent US 6,538,512
Granted Patent Utility
US 6,538,512 · Confirmation No. 2533

DOUBLE-CASCODE TWO-STAGE OPERATIONAL AMPLIFIER

Inventor: Runhua Sun
Patented Case View Patent ↗ View Publication ↗
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 Code Description Pages PDF
2021-11-04 N570 Communication - Re: Power of Attorney (PTOL-308) 1 View
2021-11-04 N570 Communication - Re: Power of Attorney (PTOL-308) 1 View
2021-10-22 PA.. Power of Attorney 2 View
2021-10-22 N417 Electronic Filing System Acknowledgment Receipt 2 View
2021-10-22 R3.73 Assignee showing of ownership per 37 CFR 3.73 3 View
2002-07-18 TRNA Transmittal of New Application 3 View
2002-07-18 A.PE Preliminary Amendment 8 View
2002-07-18 SPEC Specification 9 View
2002-07-18 CLM Claims 4 View
2002-07-18 ABST Abstract 1 View
2002-07-18 DRW Drawings-only black and white line drawings 2 View
2002-07-18 OATH Oath or Declaration filed 2 View
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Quick Facts
Patent No.
US 6,538,512
App. No.
10/198,848
Filed
2002-07-18
Granted
2003-03-25
Pub. No.
US20020175757A1
Art Unit
2817
PTA
0 days